More air means more horsepower, increased throttle response, acceleration and top speed. R&D has done extensive dyno and race testing to ensure maximum airflow and horsepower gains. New four stroke applications have been proven to add 3-5 horsepower with quick and easy installation. The unique Pro- Lock base allows for rapid removal for carb adjustments whether you are in the shop or on the water. These filters are totally maintenance free, bolt them on and hit the water.